Operating Instructions Chapter 3
C4000 Micro/Basic/Basic Plus/Eco
8009423/YT79/2016-03-14 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 17
Subject to change without notice
Product description
3.4.4 Sender test
The C4000 sender (except C4000 Eco M12 × 4 + FE) has a test input for checking the
sender and the related receiver. During the test, the sender no longer emits light beams.
Thus, it simulates — for the receiver — an interruption of the protective field.
• During the test the sender indicates ν.
• The test is successful, if the C4000 receiver switches to red, i.e. the switching outputs
(OSSDs) are deactivated.
C4000 sender and receiver are self-testing. You only need to configure the function of the
sender test if this is necessary for an older existing application.
In order to perform a sender test, a means of controlling the test input must be available.
The electrical connection at the test input is described in chapter 5.6 “Test input (sender
test)” on page 34.
3.5 Status indicators
The LEDs and the 7-segment display of sender and receiver signal the operating status of
the C4000.
3.5.1 Status indicators of the sender
Display Meaning
O Yellow Supply voltage OK
δ System error. The device is defective. Replace the sender.
ν The device is in the test mode.
τ Non-coded operation (only after switching on)
Other
displays
All other displays are error messages. Please refer to chapter “Fault
diagnosis” on page 43.
Note
the sender
the sender
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